What type of view would you primarily use for complex aggregations in SAP HANA?

In SAP HANA, the preferred choice for complex aggregations is a calculation view. This type of view is designed to handle multiple data sources and perform complex calculations or transformations. Calculation views allow you to create advanced data modeling techniques, such as combining multiple tables, performing aggregations, and applying filters. They are particularly suitable for scenarios where you need to implement intricate business logic, as they provide the flexibility to apply different aggregation functions and handle various data types.

In addition, calculation views support both graphical and script-based definitions, enabling users to build and visualize these views easily. By utilizing SQLScript within a calculation view, you can optimize performance for complex aggregations and analytics.

While analytical views can also be used for aggregations, they are more suited for straightforward analyses, such as those aligning closely with analytical scenarios where predefined metrics are required. Attribute views are primarily used to define dimensions and attributes and are not designed for complex aggregations or calculations. Graphical views are a way to visualize data, but they do not inherently perform the aggregations or complex calculations needed in analytical scenarios. Thus, for the specific need for complex aggregations, calculation views stand out as the optimal choice.